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23.4除以5.2乘以3.2

(3.8÷5.2)×23.4=64

=23.4×3.2÷5.2 =2.6×9×3.2÷(2.6×2) =9×(3.2÷2) =9×1.6 =14.4

23.4/5.2*3.2 =9/2*3.2 =(10-1)*1.6 =16-1.6 =14.4

解:原式=23.4x5.2x3.2=389.376. 答:答案是389.376.

除以一个数=乘以它的倒数

3 2=7 3*2+(3-2)=7 5 4=23 5*4+(5-2)=23 7 6=47 7*6+(7-2)=47 9 8=79 9*8+(9-2)=79 10 9=10*9+(10-2)=98 答案98

(4又3/5+3又2/7)÷(2/5+2/7)=(23/5+23/7)÷(2/5+2/7)=23(1/5+1/7)÷[2(1/5+1/7)]=23/2 =11又1/2

(1)(8.8-23.4×13)÷59,=(8.8-7.8)÷59,=1×95,=145;(2)64×12.5×2.5,=(8×12.5)×(2.5×8),=100×20,=2000;(3)5.526-4.84+4.474-3.16,=(5.526+4.474)-(4.84+3.16),=10-8,=2;(4)24×(13+56-34),=24×13+24×56?24×34,=8...

根据题意可知第一个平方数的底数为:1+2+3+4+5+6+7+8=36,所以第四个为36 2 +37 2 +38 2 +39 2 +40 2 =41 2 +42 2 +43 2 +44 2 .故答案为:36 2 +37 2 +38 2 +39 2 +40 2 =41 2 +42 2 +43 2 +44 2 .

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